package com.csnf.servlet;

import com.csnf.entity.User;
import com.csnf.service.AdminService;
import com.csnf.service.UserService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.SQLException;
import java.util.List;

@WebServlet({"/getUser","/editUser","/updateUser"})
public class UserServlet extends HttpServlet {
    UserService userService=new UserService();


    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        Integer user_id= Integer.valueOf(req.getParameter("user_id"));
        String user_name= req.getParameter("user_name");
        String user_nickname= req.getParameter("user_nickname");
        Boolean flag=false;
        try {
            flag= userService.updateUser(new User(user_id,user_name,user_nickname));
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        if(flag){
           getUserByNickName(req, resp);
        }else{
            req.setAttribute("msg","修改未成功！");
            req.getRequestDispatcher("editUser.jsp").forward(req, resp);
        }
    }

    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String path=req.getServletPath();
        switch (path){
            case "/getUser":
                getUserByNickName(req, resp);
                break;
            case "/editUser":
                getUserById(req, resp);
                break;
        }
    }

    private void getUserById(HttpServletRequest req, HttpServletResponse resp) {
        String user_id= req.getParameter("user_id");
        try {
            User user=userService.getUserById(Integer.valueOf(user_id));
            req.setAttribute("user",user);
            req.getRequestDispatcher("editUser.jsp").forward(req, resp);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    private void getUserByNickName(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String queryName= req.getParameter("queryName");
        queryName=queryName==null?"":queryName;
        try {
            List<User> userList = userService.getUserByNickName(queryName);
            req.setAttribute("userList", userList);
            req.getRequestDispatcher("success.jsp").forward(req, resp);
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }

}